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Serum phosphate and potassium. (a) A line is drawn for each subject from baseline phosphate to end-of-intervention phosphate, first for the standard diet and then for the modified diet. (b) A line is drawn for each subject from baseline potassium to end-of-intervention potassium, first for the standard diet and then for the modified diet. At an individual level, there was significant variability in serum phosphate and potassium in both arms of the trial.
